Blue Screen of Death with error message after latest Windows Update

#1
Help!

After the latest updates on Windows Update I can't boot my laptop (an HP Envy Ultrabook 4). Every time I try to start the computer it first goes into repair mode (where none of the solutions have worked so far) and subsequently displays only a blue screen with the message:
"STOP: c000021a {Fatal System Error}
The verification of a knownDLL failed, system process terminated unexpectedly with a status of 0x000012f (0x003a6e70 0x00000000). The system has been shutdown".
The only thing I can do after that is to restart the computer manually and thus the whole procedure starts over again. I have tried to run chkdsk /r /f and sfc /scannow in cmd.exe (from the repair menu) and change a number of values in regedit.exe, but nothing has worked so far. Can anyone help me solve this problem? (I'm relatively sure that it is not due to hardware problems; the computer worked perfectly before the update).

Thanks in advance!

/Fredrik
 


helpifIcan

Extraordinary Member
#2
Restore prior to the update. There has been a number of complaint that 2 of the updates are causing this problem. After the restore install a few at a time until you find the bad ones or Google for the bad ones.
 


#3
The problem is that I'm not even able to use system restore, it tells me there are no restoration points saved.
 


helpifIcan

Extraordinary Member
#4
You must have had restore points turned off, it makes one before doing the updates. Maybe someone else will have another idea.
 


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